From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Diagram specifying the steering lock angles for the Goshawk II.
| Identifier | ExFiles\Box 49\4\ Scan142 | |
| Date | 9th May 1932 | |
| x4263 SEC 7040 STEERING LOCKS GOSHAWK II RH{R. Hollingworth} LOCK 36 1/2° FRAME LINE 1.750 .750 L H LOCK 41° MEASURED FROM EDGE OF 32.000 x 4.500 DUNLOP STRAIGHT SIDED TYRE HWB 9/5/32 R.R. 199 (250T) (SD676 19-7-17) M/P 180865 | ||